development of feeder messenger wiredevelopment product pvc environment and energy laboratory...
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発行:2014年4月 No.393 編集兼発行責任者:和田 朗
Kansai Branch TEL : +81(0)6 6364 0373 Chubu Branch TEL : +81(0)52 212 1880Sales Support & Branch Office Management Department TEL : +81(3)5606 1095 Tohoku Territory TEL : +81(0)22 266 3344 Kyushu Territory TEL : +81(0)92 291 6126
1-5-1, Kiba, Koto-ku, Tokyo 135-8512
ユニバーサルデザイン（UD）の考え方に基づき、より多くの人に見やすく読み間違えにくいデザインの文字を使用しています。
http://www.fujikura.co.jp
Fujikura has developed a super-small-diameter leaky coaxial cable with the smallest diameter and the least weight,
ZLCX-2.5D, which has major uses for short-distance wireless communications. *1
The high flexibility of ZLCX-2.5D due to its small outer diameter of about 4 mm and light weight of 21 g/m provides the ease of
wiring and installation in small space. In addition, a new technology enabled vertical emission of radio waves, which is tough
for conventional LCX to perform, and this resolved the problem of the shadow area around the terminal. Installing ZLCX-2.5D
allows the creation of a wireless LAN network environment only on the desk of a meeting room, which requires security, and a
wireless environment by removal of wires connected to switches or sensors from a confined space of an ICT device.
42014 No. 393
*1 Researched by Fujikura as of February 2014*2 Measurement value of horizontally polarized wave of standard die pole antenna at the point of 1.5 m away from the cable
ZLCX-2.5D
ZLCX-2.5D
Development of Super-small-diameter Leaky Coaxial Cable (ALCX-2.5)
AP
R
Structure and Standard Characteristics
Item
Inner conductor
Insulation
Outer conductor
Sheath
Outer diameter of cable
Estimated mass
Characteristic impedance
Transmission loss
Joining losses *2
Shadow areaSlanted radio wave emission,
Horizontal radio wave emission
Transmitter/Receiver
Wireless sensors and switches
Component, Characteristic value
Annealed copper wire, 0.9 mm
Foamed Polyethylene, 2.6 mm
Copper tape with openings, Coarse-braided
tin-coated annealed copper wire
Non-halogen flame-resistant polyethylene
4.3 mm
21 g/m
50 Ω
0.91 dB/m at 2.4 GHz
62 dB at 2.4 GHz
Structure of ZLCX-2.5D
Sheath Insulation Inner conductor
Copper tape with openings, Coarse-braided tin-coated annealed copper wire
Comparison of Conceptual Diagrams of Radio Wave Emission
Conceptual Diagram of Wireless Inside of ICT Device (Vending Machine, Copy Machine, etc.)
Horizontal radio wave emission
Transmitter/ReceiverConventional LCX
Power and Telecommunication System Strategy & Sales Engineering Division [email protected]
Transmitter/Receiver
Radio wave shielding
Development of Feeder Messenger Wire Protective Sheath
Fujikura has developed a feeder messenger wire protective sheath to protect wires to feed electric power to trains during
construction. In the past, two protective sheathes were needed to protect two feeder messenger wires, each of which
consists of a feeder wire and a messenger wire. The new product, however, is capable of protecting two wires at once by
having a near rectangular cross section.
The protective sheath is given a shape of the opening to smoothly accommodate two wires. It also has a double-layer
structure (outside: black polyethylene, inside: yellow polyethylene) to be opened easily at the time of accommodation but
closed tightly after that by the adjustment of material strength. Those features help easy attachment to or detachment from a
feeder messenger wire.
Application Area Product Specifications
■Protection of feeder messenger wire
(hard-drawn copper stranded conductor) at once
Application of the Sheath
Fujikura Ltd.
Feeder Messenger Wire Protective Sheath
Item
Withstand voltage
Material
Length
Characteristics
in dry air 15 kV, after spraying water 10 kV for one minute each
Yellow polyethylene (outer layer), Black polyethylene (inner layer)
2 m/unit
Transmission and Distribution System Engineering Division [email protected]
“Tsunagu”Technology New Product News
Power and
Telecom
Power and
Telecom
PVCDevelopment product
Environment and Energy Laboratory [email protected]
Development of Eco-friendly High Flame-retarding Compound
Development of Stainless Cable Protector
Fujikura has developed an ecologically-friendly high flame retardant compound used in sheets by applying our flame retardant
technologies nurtured in developing cladding materials of electric wires.
Despite being free of halogens (no chlorine or bromine), the compound-containing sheet provides a high level of flame
retardancy equivalent to UL 94 V-0 when its thickness is 0.2 mm, which was achieved solely by PVC for general purpose use
in the past. The compound generates much less smoke at the time of combustion than PVC and no black smoke, in
particular, at all. In addition, the compound uses polyolefin as the base material with a low specific gravity and low emission
factor, providing eco-friendliness from the view point of recycling, CO2 reductions and safety to the human body. With
sufficient mechanical properties, the compound is expected to find uses in the fields including vehicles, electronic devices,
and building materials, where environmental friendliness, safety as well as flame retardancy are required.
In the future, we will aim at commercializing the compound by proceeding with the research of secondary machinability such
as environmental durability, drawability, and vacuum formability.
KYOEI HIGH OPT Co., Ltd. has developed a stainless cable protector to prevent damage to a cable caused by rodents
including oriental tree squirrels and mice and started the sales. In the past, stainless-clad cables were usually used to protect
cables against damage by rodents, and thus the whole cable of a section with problems had to be replaced with a
stainless-clad cable. The newly developed stainless cable protector can be wrapped around a cable for general purpose use
and is also attachable to an already-strung cable. Furthermore, the protector can even be installed in a short section if the
damaged area is limited, which also contributes to a reduction in a total cost.
KYOEI HIGH OPT Co., Ltd. has developed SZ Tube to easily tie cables or codes together in a bundle and started the sales.
The products generally used are helical-form tubes and allow the attachment to or detachment from cables or codes only
from the terminal sides. The newly developed SZ Tube has slits at a regular spacing in the S direction and the Z direction
along the length to enable the tube to be attached to or detached from cables or codes from the sides, being something
heretofore nonexistent.
Characteristics of Sheet Containing Compound under Development
Evaluation items
Tension speed Strength at break
Tension speed Elongation at break
Flame retardancy
200 mm/min
UL 94 V testing
JIS A 1322
Target values
10 MPa or higher
300 % or higher
V-O for 0.2 mm thickness
Second-grade or higher flame retardancy for 0.2 mm thickness
Sheet Containing High Flame-retardant Compound under Development
Immediately after Ignition in V-0 testing Development of SZ Tube
Major Features
■Easily attachable to cable due to helical structure
■Available in 1 m and 2 m and easily connectable and fixable with PVC tape
■Attachable to a bundle of cables tied together
Stainless Cable Protector Stainless Cable Protector Wrapped around Cable
Major features
■Available in 10 m roll to be cut to required length
■Savings in work space during attachment because of being of no winding type
■Easy branching of cables or codes at some midpoint of tube
Outlook of SZ Tube (in seven colors)
SZ Tube Wrapped around Code
( Codes can be branched at some midpoint of the tube.)
KYOEI HIGH OPT Co., Ltd. [email protected]
Power &
Telecom
Research and
Development
Power and
Telecom
PVCDevelopment product
Environment and Energy Laboratory [email protected]
Development of Eco-friendly High Flame-retarding Compound
Development of Stainless Cable Protector
Fujikura has developed an ecologically-friendly high flame retardant compound used in sheets by applying our flame retardant
technologies nurtured in developing cladding materials of electric wires.
Despite being free of halogens (no chlorine or bromine), the compound-containing sheet provides a high level of flame
retardancy equivalent to UL 94 V-0 when its thickness is 0.2 mm, which was achieved solely by PVC for general purpose use
in the past. The compound generates much less smoke at the time of combustion than PVC and no black smoke, in
particular, at all. In addition, the compound uses polyolefin as the base material with a low specific gravity and low emission
factor, providing eco-friendliness from the view point of recycling, CO2 reductions and safety to the human body. With
sufficient mechanical properties, the compound is expected to find uses in the fields including vehicles, electronic devices,
and building materials, where environmental friendliness, safety as well as flame retardancy are required.
In the future, we will aim at commercializing the compound by proceeding with the research of secondary machinability such
as environmental durability, drawability, and vacuum formability.
KYOEI HIGH OPT Co., Ltd. has developed a stainless cable protector to prevent damage to a cable caused by rodents
including oriental tree squirrels and mice and started the sales. In the past, stainless-clad cables were usually used to protect
cables against damage by rodents, and thus the whole cable of a section with problems had to be replaced with a
stainless-clad cable. The newly developed stainless cable protector can be wrapped around a cable for general purpose use
and is also attachable to an already-strung cable. Furthermore, the protector can even be installed in a short section if the
damaged area is limited, which also contributes to a reduction in a total cost.
KYOEI HIGH OPT Co., Ltd. has developed SZ Tube to easily tie cables or codes together in a bundle and started the sales.
The products generally used are helical-form tubes and allow the attachment to or detachment from cables or codes only
from the terminal sides. The newly developed SZ Tube has slits at a regular spacing in the S direction and the Z direction
along the length to enable the tube to be attached to or detached from cables or codes from the sides, being something
heretofore nonexistent.
Characteristics of Sheet Containing Compound under Development
Evaluation items
Tension speed Strength at break
Tension speed Elongation at break
Flame retardancy
200 mm/min
UL 94 V testing
JIS A 1322
Target values
10 MPa or higher
300 % or higher
V-O for 0.2 mm thickness
Second-grade or higher flame retardancy for 0.2 mm thickness
Sheet Containing High Flame-retardant Compound under Development
Immediately after Ignition in V-0 testing Development of SZ Tube
Major Features
■Easily attachable to cable due to helical structure
■Available in 1 m and 2 m and easily connectable and fixable with PVC tape
■Attachable to a bundle of cables tied together
Stainless Cable Protector Stainless Cable Protector Wrapped around Cable
Major features
■Available in 10 m roll to be cut to required length
■Savings in work space during attachment because of being of no winding type
■Easy branching of cables or codes at some midpoint of tube
Outlook of SZ Tube (in seven colors)
SZ Tube Wrapped around Code
( Codes can be branched at some midpoint of the tube.)
KYOEI HIGH OPT Co., Ltd. [email protected]
Power &
Telecom
Research and
Development
Power and
Telecom
●Issue : April 2014, No.393 ●Editor in Chief : Akira wada
Kansai Branch TEL : +81(0)6 6364 0373 Chubu Branch TEL : +81(0)52 212 1880Sales Support & Branch Office Management Department TEL : +81(3)5606 1095 Tohoku Territory TEL : +81(0)22 266 3344 Kyushu Territory TEL : +81(0)92 291 6126
1-5-1, Kiba, Koto-ku, Tokyo 135-8512
http://www.fujikura.co.jp
Development of Feeder Messenger Wire Protective Sheath
Fujikura has developed a feeder messenger wire protective sheath to protect wires to feed electric power to trains during
construction. In the past, two protective sheathes were needed to protect two feeder messenger wires, each of which
consists of a feeder wire and a messenger wire. The new product, however, is capable of protecting two wires at once by
having a near rectangular cross section.
The protective sheath is given a shape of the opening to smoothly accommodate two wires. It also has a double-layer
structure (outside: black polyethylene, inside: yellow polyethylene) to be opened easily at the time of accommodation but
closed tightly after that by the adjustment of material strength. Those features help easy attachment to or detachment from a
feeder messenger wire.
Application Area Product Specifications
■Protection of feeder messenger wire
(hard-drawn copper stranded conductor) at once
Application of the Sheath
Fujikura Ltd.
Feeder Messenger Wire Protective Sheath
Item
Withstand voltage
Material
Length
Characteristics
in dry air 15 kV, after spraying water 10 kV for one minute each
Yellow polyethylene (outer layer), Black polyethylene (inner layer)
2 m/unit
Transmission and Distribution System Engineering Division [email protected]
Power and
Telecom
On the basis of policy of universal design (UD), easy to understand and easy to read character design are used.